Tx-Rx간 무선통신이 필요 없는 LLC 컨버터 기반 유도형 무선전력전송 시스템 구현

Implementation of Inductive Wireless Power Transfer System based on LLC Converter without Wireless Communication between Tx and Rx

In general wireless power transfer systems (WPTSs), power transfer is controlled by the wireless communication between a transmitter (Tx) and a receiver (Rx). However, WPTS is difficult to apply in electronic products that do not have batteries, such as TVs. A WPTS with resonators based on a transformer of LLC series resonant converter is proposed in this study to eliminate wireless communication units between a Tx and an Rx. The proposed system operates at the boundary of the resonance frequency, and the required power can be stably supplied to authorized devices even though some misalignment occurs. Moreover, standby power standards for the electronic product can be satisfied.